Antenille’s Statistical Analysis
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This document analyzes student report card data from a class of 20 students (10 male and 10 female) and calculates the mean, median, and mode for their grades in math, reading, and writing. It finds that none of the subject areas showed a normal distribution of grades. The analysis also examines the relationship between attendance and grades, finding that students with more absences tended to have lower math scores, and looks at the impact of behavior problems on grades.
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dcsVWERGEWJBFZ.LVE3GB2OVE/ewov VLJDsvwewfbpadig0vbiodvDLSM XJDSCBEOUWBFCIOEWHF/C.zbx VDLJVLJWEDV oUWEDBiweobhvip"B/SW'ieoco;UWBCGF38GF8GFCBZMbVDUS JBVIeohvoewgf'OWEOFBGUWEGVBFUI SDVIUEBRGFOUWEVFUOGWEFBAV;UIDE;GVBUOEDWGVBUJE/DB:eWodgfe89wgfvuoe/
Name_______________1. A school teacher believes that.docx
Name_______________
1.
A school teacher believes that her kindergarten students have higher IQ than average children of that age. She decided to test her hypothesis. The IQ for her class (N=30) was 106, while the population mean () is 100. The standard deviation for her class was 10.
1.1.
State the null and research hypothesis ( & ) (1 POINT)
1.2. Write the statistical conclusion, assuming alpha = .05 (Show your calculations). (1 POINT)
1.3.
Based on your decision to reject or fail to reject , what type of error can you be making? (Choose one) (1 POINT)
Type I error
Type II error
2. A high school teacher correlated the math test scores and scores on a motivation scale for her 9th graders. She was delighted to find a high correlation between the two sets of scores. Later in the semester she correlated the math test scores of mathematically gifted students who had math scores above 85th percentile and their motivation scores. She found a much lower correlation. What could be the reason for the low correlation? (1 POINT)
3. Suppose that a performance test of manual dexterity has been administered to three groups of subjects in different occupations. The data appear in the table below. Answer the following questions.
Group1
Group2
Group3
22
23
27
25
26
24
27
28
23
28
22
23
23
27
27
25
26
26
24
23
22
24
27
28
25
27
25
26
25
23
25
23
23
24
28
26
26
27
25
25
25
27
26
27
27
25
27
26
25
28
25
26
24
24
24
28
25
3.1. Compute the mean, mode, median, variance, and standard deviation for each group. (1 POINT)
3.2. Graph the histograms. (1 POINT)
3.3. Which group seems to have performed best on the test? (1 POINT)
3.4. Which group appears to be the most homogeneous in terms of manual dexterity? (1 POINT)
4. Thirty eighth grade students were selected from a class of a rural school. A researcher was able to obtain students’ math scores in 7th grade, the teacher’s evaluation scores on students’ academic aptitudes in 8th grade, and students’ final math scores in 8th grade. See the following table for data.
Math scores in 7th grade
Final math scores in 8th grade
Teacher evaluation score
75
43
4
76
44
4
68
36
1
66
38
2
73
41
2
71
40
2
55
27
1
72
46
5
61
38
2
68
35
2
64
31
2
76
42
3
71
45
4
73
41
4
78
45
5
71
41
3
86
50
5
55
34
3
96
51
4
96
54
4
50
28
2
81
50
5
58
37
3
90
46
4
58
23
3
77
45
3
88
55
5
65
34
3
77
54
3
75
54
4
4.1. Run a correlation analysis to examine the relationships among the three variables and interpret the results. (2 POINTS)
5. Given a normal distribution of scores with mean equal to 300 and variance equal to 100, answer the following questions.
5.1. What proportion of scores would fall below 280? (1 POINT)
5.2. What is the probability that a randomly picked score would fall between 310 and 320? (1 POINT)
6. A psychologist rejected the null hypothesis that there is no difference between freshmen and sophomores on drinking behavior. She used a significance level of .05 ( = .05) what is the probability ...
When you are working on the Inferential Statistics Paper I want yo.docx
When you are working on the Inferential Statistics Paper I want you to format your paper with the following information
I. Introduction – What are inferential statistics and what is the research problem and hypothesis of the article?
II. Methods – Who are the subjects and variables within the article?
III. Results – What is the statistical analysis used, why were these tests chosen? What were the results of these tests and what do they mean?
IV. Discussion – What were the strengths of this article? What would you have done differently in terms of variables and statistical analysis? Why?
V. Conclusion – Reiterate the introduction and include relevant information that answers the questions regarding the hypothesis.
`
Read: Chapter 3 and 4 of Statistics for the Behavioral and Social Sciences.
Participate in One discussion.
Discussion 1 –Standard Normal Distribution– This allows you to look at any data set into the standard distribution form.
Quiz – Hypothesis testing
Submit your Inferential Statics Article Critique – Read Differential Effects of a Body Image Exposure Session on Smoking Urge Between Physically Active and Sedentary Female Smokers. What is the research question and hypothesis? Identify what variables were present, what inferential statistics were used and why, and if proper research methods were used. See grading rubric for full details.
Discussion Post Expectations:
Your initial post (your answer) is due by Day 3 (Thursday) of this week for Discussion 1.
When grading the Standard Normative Distribution discussion I will be looking for your answer to contain:
Week 2 Discussion 1 Board Rubric
Earned
Weight
Content Criteria
0.5
Student identifies and defines what Standard Normative Distribution (SND) is.
Student explains why it is needed to use a SND to compare two data sets.
0.5
Student identifies the purpose of a z-score in a SND.
0.5
Student identifies the purpose of a percentage in a SND.
0.25
Student explains whether a z-score or a percentage does a better job of identifying proportion of a SND.
0.25
The student responds to at least two classmates’ initial posts by Day 7.
1
Student uses correct spelling, grammar and sentence structure.
2
5
Grading - The discussions are both worth a total of 5 points. The breakdown of the grading for this week’s assignment (per discussion assignment) will be as follows:
Posting your answer by the due date (Day 3, Thursday) is worth 4 points. These five points will be based on the information outlined within the Discussion Assignment Expectations. Content will be worth 2 points and format; spelling and grammar will be worth 2 points.
Responding to two of your classmates (for each assignment) is worth 1 point. The answers must be substantive and go beyond “I agree” or “Good job” to qualify for this point.
Intellectual Elaboration:
In Wee.
#06198 Topic PSY 325 Statistics for the Behavioral & Social Scien.docx
#06198 Topic: PSY 325 Statistics for the Behavioral & Social Sciences
Number of Pages: 3 (Double Spaced)
Number of sources: 10
Writing Style: APA
Type of document: Other (Not listed)
Academic Level:Undergraduate
Category: Physics
Language Style: English (U.S.)
Order Instructions: ATTACHEDS
follow the requirements as answer the questions and one of them is to answer instead.
Basically is to make comments in each of the person names and make some questions as the requirements acquire as I copy and paste in the first page.
I don't really have much time for this assignment because is due tomorrow as you can I have no time remaining because I already use my accommodations because I was sick.
Please like the time I play because otherwise, I will get 0 grade which I don't want it. we had this problem in the past.
Thank you for your understanding
Guided Response: Review several of your classmates’ posts. Provide a substantive response to at least three of your peers, and respond to comments on your post. Do you agree with your classmate’s selection of the best value based upon their data? What suggestions might you make for other options? Explain your suggestions citing relevant information from the article and/or your text. Cite your sources in APA format as outlined in the Ashford Writing Center. FOLLOWW THE REQUIREMENTS AS NEEDED. ALL IS TO MAKE COMMENTS AND QUESTIONS. UNDER THE ANGELA ONLY NEED TO ANSWER INSTEAD ASK QUESTION.
1) Esther Landsberg
· Begin your discussion by reporting your results for each of the values listed above.
My data points were 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, and 20.
Mean: 10.5
Standard error: 1.32287566
Median: 10.5
Mode: no mode
Standard deviation: 5.91607978
Sample variance: 35
Kurtosis: 1.70428571
Skewness: 0
Range: 19
Minimum: 1
Maximum: 20
Sum: 210
Count: 20
· Based on this output, which single value best describes this set of data and why?
Based on this output, I would say that the single value that best describes this set of data would be the mean because it tells us the average of the data points.
· If you could pick three of these values instead of only one, which three would you choose and why?
If I could pick three values, I would say the mean, standard deviation, and sample variance would best describe the set of data. The mean because it tells us the average, sample deviation because it tells us how close to the average or spread out the numbers actually are, and sample variance because it helps to estimate unbiasedly.
ANSWER THE QUESTIONS AND MAKE COMMENTS AS FOLLOWING THE REQUIREMENTS ABOVE.
2) Brenda Kyle
Brenda Kyle
PSY 325 Statistics for the Behavioral & Social Sciences
Instructor: Nikola Lucas
Week 1-Discussion
June 4, 2019
At first, I had chosen number 1 through 20 but then seen another classmate had the same thing so had to change it. The chosen numbers are 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 15.
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Similar to Antenille’s Statistical Analysis
Analysis-of-data-with-missing-values.pptx
dcsVWERGEWJBFZ.LVE3GB2OVE/ewov VLJDsvwewfbpadig0vbiodvDLSM XJDSCBEOUWBFCIOEWHF/C.zbx VDLJVLJWEDV oUWEDBiweobhvip"B/SW'ieoco;UWBCGF38GF8GFCBZMbVDUS JBVIeohvoewgf'OWEOFBGUWEGVBFUI SDVIUEBRGFOUWEVFUOGWEFBAV;UIDE;GVBUOEDWGVBUJE/DB:eWodgfe89wgfvuoe/
Name_______________1. A school teacher believes that.docx
Name_______________
1.
A school teacher believes that her kindergarten students have higher IQ than average children of that age. She decided to test her hypothesis. The IQ for her class (N=30) was 106, while the population mean () is 100. The standard deviation for her class was 10.
1.1.
State the null and research hypothesis ( & ) (1 POINT)
1.2. Write the statistical conclusion, assuming alpha = .05 (Show your calculations). (1 POINT)
1.3.
Based on your decision to reject or fail to reject , what type of error can you be making? (Choose one) (1 POINT)
Type I error
Type II error
2. A high school teacher correlated the math test scores and scores on a motivation scale for her 9th graders. She was delighted to find a high correlation between the two sets of scores. Later in the semester she correlated the math test scores of mathematically gifted students who had math scores above 85th percentile and their motivation scores. She found a much lower correlation. What could be the reason for the low correlation? (1 POINT)
3. Suppose that a performance test of manual dexterity has been administered to three groups of subjects in different occupations. The data appear in the table below. Answer the following questions.
Group1
Group2
Group3
22
23
27
25
26
24
27
28
23
28
22
23
23
27
27
25
26
26
24
23
22
24
27
28
25
27
25
26
25
23
25
23
23
24
28
26
26
27
25
25
25
27
26
27
27
25
27
26
25
28
25
26
24
24
24
28
25
3.1. Compute the mean, mode, median, variance, and standard deviation for each group. (1 POINT)
3.2. Graph the histograms. (1 POINT)
3.3. Which group seems to have performed best on the test? (1 POINT)
3.4. Which group appears to be the most homogeneous in terms of manual dexterity? (1 POINT)
4. Thirty eighth grade students were selected from a class of a rural school. A researcher was able to obtain students’ math scores in 7th grade, the teacher’s evaluation scores on students’ academic aptitudes in 8th grade, and students’ final math scores in 8th grade. See the following table for data.
Math scores in 7th grade
Final math scores in 8th grade
Teacher evaluation score
75
43
4
76
44
4
68
36
1
66
38
2
73
41
2
71
40
2
55
27
1
72
46
5
61
38
2
68
35
2
64
31
2
76
42
3
71
45
4
73
41
4
78
45
5
71
41
3
86
50
5
55
34
3
96
51
4
96
54
4
50
28
2
81
50
5
58
37
3
90
46
4
58
23
3
77
45
3
88
55
5
65
34
3
77
54
3
75
54
4
4.1. Run a correlation analysis to examine the relationships among the three variables and interpret the results. (2 POINTS)
5. Given a normal distribution of scores with mean equal to 300 and variance equal to 100, answer the following questions.
5.1. What proportion of scores would fall below 280? (1 POINT)
5.2. What is the probability that a randomly picked score would fall between 310 and 320? (1 POINT)
6. A psychologist rejected the null hypothesis that there is no difference between freshmen and sophomores on drinking behavior. She used a significance level of .05 ( = .05) what is the probability ...
When you are working on the Inferential Statistics Paper I want yo.docx
When you are working on the Inferential Statistics Paper I want you to format your paper with the following information
I. Introduction – What are inferential statistics and what is the research problem and hypothesis of the article?
II. Methods – Who are the subjects and variables within the article?
III. Results – What is the statistical analysis used, why were these tests chosen? What were the results of these tests and what do they mean?
IV. Discussion – What were the strengths of this article? What would you have done differently in terms of variables and statistical analysis? Why?
V. Conclusion – Reiterate the introduction and include relevant information that answers the questions regarding the hypothesis.
`
Read: Chapter 3 and 4 of Statistics for the Behavioral and Social Sciences.
Participate in One discussion.
Discussion 1 –Standard Normal Distribution– This allows you to look at any data set into the standard distribution form.
Quiz – Hypothesis testing
Submit your Inferential Statics Article Critique – Read Differential Effects of a Body Image Exposure Session on Smoking Urge Between Physically Active and Sedentary Female Smokers. What is the research question and hypothesis? Identify what variables were present, what inferential statistics were used and why, and if proper research methods were used. See grading rubric for full details.
Discussion Post Expectations:
Your initial post (your answer) is due by Day 3 (Thursday) of this week for Discussion 1.
When grading the Standard Normative Distribution discussion I will be looking for your answer to contain:
Week 2 Discussion 1 Board Rubric
Earned
Weight
Content Criteria
0.5
Student identifies and defines what Standard Normative Distribution (SND) is.
Student explains why it is needed to use a SND to compare two data sets.
0.5
Student identifies the purpose of a z-score in a SND.
0.5
Student identifies the purpose of a percentage in a SND.
0.25
Student explains whether a z-score or a percentage does a better job of identifying proportion of a SND.
0.25
The student responds to at least two classmates’ initial posts by Day 7.
1
Student uses correct spelling, grammar and sentence structure.
2
5
Grading - The discussions are both worth a total of 5 points. The breakdown of the grading for this week’s assignment (per discussion assignment) will be as follows:
Posting your answer by the due date (Day 3, Thursday) is worth 4 points. These five points will be based on the information outlined within the Discussion Assignment Expectations. Content will be worth 2 points and format; spelling and grammar will be worth 2 points.
Responding to two of your classmates (for each assignment) is worth 1 point. The answers must be substantive and go beyond “I agree” or “Good job” to qualify for this point.
Intellectual Elaboration:
In Wee.
#06198 Topic PSY 325 Statistics for the Behavioral & Social Scien.docx
#06198 Topic: PSY 325 Statistics for the Behavioral & Social Sciences
Number of Pages: 3 (Double Spaced)
Number of sources: 10
Writing Style: APA
Type of document: Other (Not listed)
Academic Level:Undergraduate
Category: Physics
Language Style: English (U.S.)
Order Instructions: ATTACHEDS
follow the requirements as answer the questions and one of them is to answer instead.
Basically is to make comments in each of the person names and make some questions as the requirements acquire as I copy and paste in the first page.
I don't really have much time for this assignment because is due tomorrow as you can I have no time remaining because I already use my accommodations because I was sick.
Please like the time I play because otherwise, I will get 0 grade which I don't want it. we had this problem in the past.
Thank you for your understanding
Guided Response: Review several of your classmates’ posts. Provide a substantive response to at least three of your peers, and respond to comments on your post. Do you agree with your classmate’s selection of the best value based upon their data? What suggestions might you make for other options? Explain your suggestions citing relevant information from the article and/or your text. Cite your sources in APA format as outlined in the Ashford Writing Center. FOLLOWW THE REQUIREMENTS AS NEEDED. ALL IS TO MAKE COMMENTS AND QUESTIONS. UNDER THE ANGELA ONLY NEED TO ANSWER INSTEAD ASK QUESTION.
1) Esther Landsberg
· Begin your discussion by reporting your results for each of the values listed above.
My data points were 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, and 20.
Mean: 10.5
Standard error: 1.32287566
Median: 10.5
Mode: no mode
Standard deviation: 5.91607978
Sample variance: 35
Kurtosis: 1.70428571
Skewness: 0
Range: 19
Minimum: 1
Maximum: 20
Sum: 210
Count: 20
· Based on this output, which single value best describes this set of data and why?
Based on this output, I would say that the single value that best describes this set of data would be the mean because it tells us the average of the data points.
· If you could pick three of these values instead of only one, which three would you choose and why?
If I could pick three values, I would say the mean, standard deviation, and sample variance would best describe the set of data. The mean because it tells us the average, sample deviation because it tells us how close to the average or spread out the numbers actually are, and sample variance because it helps to estimate unbiasedly.
ANSWER THE QUESTIONS AND MAKE COMMENTS AS FOLLOWING THE REQUIREMENTS ABOVE.
2) Brenda Kyle
Brenda Kyle
PSY 325 Statistics for the Behavioral & Social Sciences
Instructor: Nikola Lucas
Week 1-Discussion
June 4, 2019
At first, I had chosen number 1 through 20 but then seen another classmate had the same thing so had to change it. The chosen numbers are 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 15.
The statement that a person who scores 120 has twice as much of .docx
The statement that a person who scores 120 has twice as much of the trait being measured as someone who scores 60 is appropriate for:
a variable measured on an interval scale
a variable measured on a ratio scale
any continuous variable
any test whose scores are normally distributed
Question 2 0.5 pts
Which of these is a discrete measure?
How many points you earn on a test
How many inches you grew in a year
How many term papers are due this semester
How many hours you study for an exam
Question 3 0.5 pts
It is not possible to report the average score for data measured on what type of scale?
nominal
ordinal
interval
ratio
Question 4 0.5 pts
Jane’s percentile rank on a science exam is 78. This means that:
Jane answered 78% of the questions correctly on the exam
Jane's score was equal to or greater than 78% of the other students' scores
Jane achieved a score of 78% on the exam
Jane scored the same as 78% of the other students
Question 5 0.5 pts
Rudy scores 83% on a test. From that, we know that:
Rudy's percentile rank is 83%
83% of the people who took the test scored the same or lower than Rudy
Rudy scored above average
Out of 100 possible points, Rudy scored 83 pointsQuestion 6 0.5 pts
Here is a set of scores: 3,6,2,9,4,7,5,7,7,5. If the scores were entered into a frequency table, what would be the cumulative frequency?
7
9
10
55
Question 7 0.5 pts
Your data consist of the average family size for all families within each of six different income levels. What type of visual display would best convey the data?
histogram
line graph
bar chart
frequency table
Question 8 0.5 pts
You are constructing a histogram for scores that range from 70 to 100 in whole points. Frequencies range from 3 to 10; that is, every whole-point score between 60 and 100 occurs at least 3 times, and at least one score occurs 10 times. Which of these would probably be the best range and size for the score intervals along the X-axis?
1-point intervals from 70 and 100
1-point intervals from 0 and 100
5-point intervals from 70 and 100
10-point intervals from 70 and 100
Question 9 10 pts
You are looking at a frequency table for a large number of scores. Without doing any further calculating, which measure of central tendency can you immediately report?
mode
median
mean
none of these
Question 10 10 pts
In a set of raw scores for a teacher-constructed test, what will be the shape of the distribution around the mean?
normal
bimodal
skewed
it could be distributed in any of these ways
Question 11 0.5 pts
From the standard deviation, we know something about the:
general location of most scores within a scores distribution
spread of scores within the scores distribution
shape of the scores distribution
frequency at each score value
Question 12 0.5 pts
You select a sample of 50 scores from a population of 2,000 scores. You compute the range and standard deviation on the sample of 50 scores. You then select another sample of 50 scor ...
How NOT to Lie with Statistics
Workshop Presentation
How NOT to Lie with Statistics
July 16, 2009
Indianapolis, IN
The statement that a person who scores 120 has twice as much of the .docx
The statement that a person who scores 120 has twice as much of the trait being measured as someone who scores 60 is appropriate for:
a variable measured on an interval scale
a variable measured on a ratio scale
any continuous variable
any test whose scores are normally distributed
Question 2 0.5 pts
Which of these is a discrete measure?
How many points you earn on a test
How many inches you grew in a year
How many term papers are due this semester
How many hours you study for an exam
Question 3 0.5 pts
It is not possible to report the average score for data measured on what type of scale?
nominal
ordinal
interval
ratio
Question 4 0.5 pts
Jane’s percentile rank on a science exam is 78. This means that:
Jane answered 78% of the questions correctly on the exam
Jane's score was equal to or greater than 78% of the other students' scores
Jane achieved a score of 78% on the exam
Jane scored the same as 78% of the other students
Question 5 0.5 pts
Rudy scores 83% on a test. From that, we know that:
Rudy's percentile rank is 83%
83% of the people who took the test scored the same or lower than Rudy
Rudy scored above average
Out of 100 possible points, Rudy scored 83 pointsQuestion 6 0.5 pts
Here is a set of scores: 3,6,2,9,4,7,5,7,7,5. If the scores were entered into a frequency table, what would be the cumulative frequency?
7
9
10
55
Question 7 0.5 pts
Your data consist of the average family size for all families within each of six different income levels. What type of visual display would best convey the data?
histogram
line graph
bar chart
frequency table
Question 8 0.5 pts
You are constructing a histogram for scores that range from 70 to 100 in whole points. Frequencies range from 3 to 10; that is, every whole-point score between 60 and 100 occurs at least 3 times, and at least one score occurs 10 times. Which of these would probably be the best range and size for the score intervals along the X-axis?
1-point intervals from 70 and 100
1-point intervals from 0 and 100
5-point intervals from 70 and 100
10-point intervals from 70 and 100
Question 9 10 pts
You are looking at a frequency table for a large number of scores. Without doing any further calculating, which measure of central tendency can you immediately report?
mode
median
mean
none of these
Question 10 10 pts
In a set of raw scores for a teacher-constructed test, what will be the shape of the distribution around the mean?
normal
.
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- 1. Antenille’s Statistical Analysis Antenille M. Santos EDD 581 January 19, 2014 Dr. Ronald Malcolm
- 2. Task
- 3. Gender Male (10) Female (10) Class Make Up (Gender)
- 4. Math •Mean: 82.7% •Median: 86.5% •Mode: 96% Reading •Mean: 82% •Median: 87% •Modes: 78%, 95%, 98%, and 100% Writing •Mean: 83.75% •Median: 86.5% •Mode: 100% Homework Mean, Median, Mode (Math, Reading, Writing) Determine if there is or is not a normal distribution for the Math, Reading, and Writing report card grades. After analyzing and plotting the data from the report cards, the results show that none of the subject areas have a normal distribution in report card grades.
- 5. 0 10 20 30 40 50 60 70 80 90 100 0 5 10 15 20 ReadingScore(%) Students Student Reading Grade Score Student Reading Grade Score Reading Scores
- 6. The purpose of this descriptive statistics allows one to see factors that affect a student’s grades : Attendance The more the student is absent, the lower his/her grades become There are 2 boys and 2 girls with attendance problems Behavior/Discipline problems Students with discipline problems do not have exemplary grades Purpose of Descriptive Statistics
- 7. In general, the students who have excessive absences have lower grades in Math class. Relationship Between Math Scores and Absences